ix 
Vilmorin Cat.—Catalogues de Vilmorin-Andrieux et Cie. 
Warner Orchid. Plants. — Warner, Select Orchidaceous 
Plants. 
W. G.—Wiener Illustrirte Garten-Zeitung. 
Williams’ Cat.—Williams’ Descriptive Catalogue. 
W. O. A.—Warner and Williams’ Orchid Album. 
W. O. Gr. Man.—Warner and Williams’ Greenhouse Manual. 
Year-book.—Hogg’s Gardeners’ Year Book. 
Other abbreviations used are :— 
diam.—diameter. l.—leaf or leaves. 
J., —figure, figures. per.— perennial. 
jfl.—flower or flowers. pet.—petal or petals. 
Jr.—truit. pl.—plate or plates. 
Jt.—foot or feet. S.—Stove. 
G.—Greenhouse. sep.—sepal or sepals. 
H.—Hardy. seyv.—series. 
herb.—herbaceous. shr.—shrub. 
H. H.—Half-hardy: syn.—synonym. 
in.—inch or inches. t., tt.—plate, plates. 
infl.—inflorescence. var.—variety or varieties. 
It only remains to add, that the present list has no pretensions 
to be more than a compilation. Asan Index to the horticultural 
literature of recent years, it is believed that it will be found of 
practical utility. To have attempted to further elaborate it or to 
give it anything approaching a scientific character would have 
postponed its publication indefinitely. 
No doubt, its use will detect some errors. For example, by 
some mischance the genus Sonerila has got out of place. But 
those who in using the book discover its defects will probably be 
those who will regard them most leniently. 
; W. T. THISELTON-DYER. 
January, 1900. 
